My 99 suburban (5.7 vortec) lost power last summer and after much deliberation and speaking with my mechanic, I decided to go with Jasper. I elected to go with their authentication build, but when they tore it down the head was cracked in two places. So I went with one of their rebuilds.
It is being installed now, so no results to report. They do have a good warranty program, but that cost $ too.
I’m anxious to get it back.
~ Victor
1941 3/4-Ton Pickup (in process). Read about it
in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~
moved on to fellow Bolter 
