[BR3W CITY]

based on my fitment, I can't imagine those would work unless your motor sits pretty high.
The primaries are too long before they kick back, and would most likely hit right into the perches. Manifolds for these truck swaps need to kick back almost right away, and tuck back and in. Thats why some of the tbss and fbody and camaro stock manifolds seem to fit the best. The cast design eliminates the long primaries and lets the exhaust start heading towards the rear right away.