RE: what happens if i port my stock heads?
 

I thought about a month or more ago someone said it was gonna be like $1,500 to have the dealer swap the stock gears for GM 4.10s in a 2WD. Maybe I missread it. If that's the case and it were only half as much to do a 2WD then I might be pondering a future mod......

RE: what happens if i port my stock heads?
 

It wasn't me, around here it's $1000 per axle. I would love to have 4.10s though, just can't afford it.