It would be, use the Z28 weight specs and add some power... This is what I did the last two times. My series is 10 races long and we are in 6th race. Every car has run within .2 of each other at every track. However one thing I did different was use the non tunable Race suspension: soft. Fully adjustable differential though.. So far we have ran Daytona, Indianapolis, Leguna Seca , Grand Valley Speedway and Cape Ring South. Times ranged from 1:16.3 to 1:16.5. It can be done but tunable suspension makes it more difficult I think.. We also are running Race Hard tires and stock brakes... Cars have not been adjusted at any time this season.. Camaro, Mustang and Aston have all won races. Noone really fast driving in the BMW or 370z at the moment but the cars have ran the same times as the others... 13 drivers in the series and every make has podiumed... Just leave the cars alone and hope and pray no one fast gets in a Camaro lol.. See you guys on the track..