4AG help/questions

[Sport1.3]

anyone here done any extensive work on an 4AG motors (small/large port, GZE, 20v etc)? ive finished the suspention on the car pretty much and am looking to upgrade the motor from here, and im interested to see what works for other ppl on the boards. currenty i have a freshly rebuilt 87-89 large port(red hat) with an custom intake and supertrapp muffler (for E-stock solo II). i would like to stay with the stock 16v, but also want a decent amout of power (150-170whp). id also like to stay NA if at all possible. are there any local shops that might have had some experiance working alot with the motor?

[SampaGuy]

for that amount of power it would be cheaper to go with the GZE or 20v. i would personally go with the GZE just because forced induction is cool but if you go 20v go with the silver top, dont bother with the blacktop 6spd the wiring is too much of a pain in the ass.