Which are better and why? The older style with the biscuit mounts or the newer style with the spool mounts.

drucker@sbcglobal.net

Spool type, hands down, no brainer.
Spool type mounts last longer, they will contain the engine even when worn-out or broken, they can be stiffened by filling the voids in the rubber and most of all, these make engine "drop-ins" a snap.

If you have a 67 or later A-Body and do lots of engine swaps or if you are about to do front end work, swap-over the K-frame to the spool type while you are in there.
DD

Okay, thanks for the info. But will I have to use the idler arm and associated steering linkage from the donor vehicle? Thanks again for sharing your knowledge.

drucker@sbcglobal.net

The spool K's use the "through bolt" type idler arm. (68-76) there are a few different center links tat all swap in, I used the 68-72 type because it has the deepest "U" and gets me the most oil pan clearance.
DD

Here's another, related question: does anybody refurbish these (a-la Damper Dudes)? I was shopping for new spool types awhile ago and even the ones bearing the names of supposedly-reputable American companies were "hecho en Mejico" and very poorly made.
I found one Borg Warner (@ an independent auto parts store) which had obviously been on the shelf for years---the difference in quality was striking. Any American companies still making good ones? Thanks.

---Red

Torr66@aol.com