The time has come to replace the engine in my 88 truck. Ive been searching around here in AZ and the rebuilders have good and bad reviews. Ive also looked into online sellers and they all seem to spec their engines at the 8600 gvw ratings for a 1 size fits all deal. Meaning the lower 190 hp version as apposed to the 7200 gvw 210 hp higher compression engine. I'm currently leaning to the all new gm part #12691671 replacement engine. Have any of you guys bought this particular engine? If so are you happy with it?