There's a thread now posted over in the Ford V-8 section discussing "Speedway" motor mount designs for that application. I know the Ford guys are forced to create their own and to me this type/style looks like it might be a good solution.
http://www.speedwaymotors.com/p/3274,405_SandB-Ford-Motor-Mounts.html
I know that the JTR mounts are the tried and true! I think JTR's manuals are very informative; I've read and re-read both of my JTR manuals many times! I know that almost every pre-LSx swap uses the bolt in JTR mounts >> but whenever I look at them they just kinda look like a jury-rigged solution. (Please don't shoot me, just my opinion)
Using an untried alternative solution will present many issues >> engine placement, vibrations, drive line angles and welding but that said, what are your thoughts around options something like these:
http://store.summitracing.com/partdetail.asp?part=TRD%2D4840&autoview=sku
or
http://www.speedwaymotors.com/p/3273,405_Small-Block-Big-Block-or-90-V6-Chevy-Crossmember-Mounts.html
(?) Thanks!