Well this has turned into interesting debate.lol I copied & pasted form the newcelica site.

Heres the price breakdown:
The total price will be Labor and supplies + shipping, with a refundable core charge if you do not send me a header to port. If you send me a header there will be no core charge.

Labor and supplies:
GT Header:
$110

GTS Header:
$150

GTS or GT aftermarket header (DC, Hotshot, Trial etc) - Porting fees be the same or less than the cost of porting stock header

Shipping:
Depends on what you want - I will charge you exactly what UPS or FED-EX charges me for the type of shipping you want

Core charges:
The big benefit of the core system is that you can order a header and get the ported header ready to go without having to have your car out of comission for a week or more. The new header arrives fully ported and you send your old header "the core" back to me after it has been replaced. I am going to try and find some used manifolds of all styles so I can bring the core charges down, but on a lot of these I am going to have to buy new manifolds to get the ball rolling. As such you will be requred to pay a refundable core charge that is equal to my purchase cost for a new manifold. If you keep the manifold I send you and don't send me yours back I keep the core charge to replace the manifold. You are responsible to pay shipping on the core. The core must be returned within 2 weeks of receipt of the Ported manifold, or $40 / week will be deducted from the core refund for weeks after 2 weeks.

2000-Early 2003 GTS - $150
Feb 2003 - March 2003 GTS - $230 (no air injection but uses manifold with blockoffs)
April 2003 and newer GTS - $230 (has air injection system)
All years GT - $230

Follow the link below to a guide to help you determine which manifold you have. You will have to register to view it but its free to register so no worries:
http://www.newcelica.org/forums/showthread.php?t=205642


Additional Services:

Flowbenching -
$50 per header for numbers after porting.
$90 for before and after numbers on the same header.
$90 / Hour for flowbenching other components

Ceramic Coat for Header:
Ceramic coating is now available.
The price is $140 for Normal GT or GTS and $170 for air injection headers
It adds 2-4 weeks to the process

Manifold and donut Gaskets:
I will provide pricing on stock gaskets and will re-sell them at retail cost to save you a trip to the dealer if you want new gaskets

Port matching to a specific Gasket:
Add $10 to cost of manifold and Gasket

Payment and shipping information:
Will provide this information on or before March 1st when headers go up for sale.

Availability:
I intend to sell these on an "In Stock" basis whenever possible and I will not exceed more than 2 pre-orders for any one type of manifold I do not have in stock. Translation: At worst there will be one guy in line ahead of you for your particular manifold style.

Please note these are INITIAL PRICES. They will probably not go down, but they may increase if I find my costs have exceeded initial expectations. Thease increases will of course affect only sales I have not already agreed to a price on.

So there you go 00, this along with CAI,Good exhaust,suspension,weight reduction should get you pretty quick, for a GT l lol Depending on what type of power you're really wanting to achieve, MWR, Hass,ect have great turbo set-ups with proven results.

Now me, I''m going to do the 3sgte, no nitrus tho( the finacee's not a fan of the gas lol ) I have Sport20 to thank for the 3sgte idea, & I would still suggest you goto the NewCelica.org site. They have alot of companies that specialize in Celica parts,kits ect.....Vegeta