For what it's worth, I mentioned upgrading the cam in my 3.2 to an RV style cam when I thought I needed a rebuild. Both rebuild companies I spoke to said they could do it, but would not offer any type of warranty on the engine. I decided it would have been a bad idea anyways, since most of the driving I do is at the lower end of the power band.

Sammy

95.5 Rodeo, automatic, 3.2 SOHC, D44 front and rear, 4.88's, 33" muds