For engine mounts I'd either;
Go for a 'bobbin' style as Nick suggests (Land/Rover V8, etc) of a suitable height - lots of different variations available, or;
Go for a universal weld on mount:
http://www.jegs.com/i/Trans+Dapt/969/4501/10002/-1, or;
Search
www.jegs.com or
www.summitracing.com - there are about a billion* different variations of LSx mounts available
If you find what you want stateside and you don't want to personally import it, try
www.topspeedautomotive.co.uk - they're round the corner from me at work so I can call in and pick bits up, and they got me a QuickTime bellhousing in from the US in under a fortnight for about the same as it would have cost me direct.. really helpful oldschool guys.
P.S. Going back to traction control - yes, RaceLogic stuff is not cheap.. I think about £800 now for a full system, but well worth it and a million times better than the Omega system, certainly the FL one.
*slight exaggeration but, really, only very slight!