Plenty of donors at the Pick & Pull type yards. Don't forget all of the Dodge mini-vans that have the 3.0l.

You might be able to find some that could be used as is. Spend the money on replaceing the guides, lifters.
<img src="/forums/images/graemlins/cheers.gif" alt="" />

95 Montero SR 3.5 sitting on the sidelines.
96 Montero LS Daily driver.
88 Audi 90 Quattro marking it's territory.
69 Bronco built but uncut garage queen.
TANSTAAFL