Posted by Norm on July 18, 2001 at 00:54:30:

In Reply to: 4.2 engine in 1990 RR posted by darin on July 12, 2001 at 15:12:23:

The 4.2 should bolt right in, but why not put in a 4.6 which fits just as easily? It's more powerful and better built. I replaced the 3.9 "B" on my '95 Disc. with an RPi 4.6 and it's A BIG improvement.