64chevyrebel.Back in the 60's the slicks were hard wall with a width of about 9"The front end was raised to preload the back.On the launch the weight would transfer back even more.The cars used were Willys,Chevs,Studebakers,which had straight axles in them.Later other cars had straight axles in an attempt to loose weight.This is where I'll add that the cars did not handle worth a darn.But since all the were about the same, the playing field was level.When the softwall slick was introduced in the late 60's,that was the end of the highboy gasser.Down into the weeds went the racecars.If you want to win races,don't do it.There is a lot of suspension updates for your truck.If you are going for the "LOOK"of an old gasser,then fine.Please,realise that the old cars didn't handle well,that's the reason that they race a nostalgia races not NHRA,, Boyd