It cost the same to build a ITC car as a ITB car or almost ITA VW. The for sale price is not near as much for ITC as ITB. Go as fast as you can forthe cash . it is a ton cheaper to buy than build. The A2 Golf/Jetta is the way to go , there are always plenty to race with and they are solid chassis. i have a S1 Scorocco that flies for cheap, check the adds.
The 16v will cost a ton to go midpack .03MM