Acura

[Jecht]

Type-Rs are expensive and hard to come by, GSRs are fairly common and have a fair amount of power, LS/SE/RS have the least power and less fun stuff.
-The engine in the LS/SE/RS doesn't have VTEC.
-The RS trim level did not come with a sunroof or leather.
-The front and rear bumpers were changed slightly in 1998 because snow would gather in the headlight recesses on the earlier bumpers.
-The Type-R has a strengthened chassis for better performance, so some things require work to fit on other Integras. One such part is the rear sway bar - it requires additional bracing to install otherwise you risk ripping the subframe.

I would say go with a GSR if you are going to do basic mods to it. If you are just going to redo the entire engine setup anyways, you might as well buy an LS with some decent leather seats.