2002 Hummer heads

[markrinker]

Are there any differences/improvements between my stock 1997 6.5L heads and those found on a 2002 6.5L Hummer?

I found a pair for sale and now would be the time to drop them on my '97 motor if there were merit to doing so...

[gmctd]

Last I read, Hummer and van heads are similar, where intake manifold bolt holes are drilled and tapped in the vertical plane, shifting real-estate for the rear center-mounted turbo.

Best check it out b4 committing, imo.