i know extreme performance they do vettes thinks thats one and pro dyno maybe and there is umi in north scotts dale think they mess with them thunder550 may know of some
1998 chevy 1500 with 6.0/4l80e comp cam, tune, exhaust,
welcome
Thanks. Up in WI right now visiting my ill grandfather. I'm really liking this weather in the 30's! Such a nice change from constant heat.
2000 GMC Sierra 5.3L 4x4 ECSB
 Junior Member
 
					
					
						Junior Member
					
					
                                        
					
					
						hi, welcome to the forum.. From Riverside, CA...
I am down for the shop idea only one more year to go haha
ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06
waiting to go in... 3.90s, 214/220cam