Me and my son dropped his express off yesterday to have 4.56's and a posi installed.He told us about a week to complete between ordering the parts and some work to the unit so the gears will work.
He raced the truck bone stock with 3.31 gear and a 33" tire and crossed the traps in second gear it ran 14.58
Then he had a B&G tune and a 26" drag radial and ran 13.83@100.
Our track in south jersey opens Feb.24 so we'll see.
Gear guy just called me,after changing the gears and posi he put the left axle in and all good but then the right one and the axle clip wont line up.he's waiting on a call from true trac. He said he'll get it right.