They both sound like pretty good deals to me, price and specs wise they seem very similar. Can't say that I've heard of Trick & Mansweto Racing before, but that's not to say they are no good. FMP have been around for years so they must be doing something right. You sound like you are off to a good start with T&M as they replied to your e-mail promptly, hopefully this dilligence carries over to their engine building. It's your money mate, you spend it with whoever makes you feel comfortable. Keep us posted how you go and don't forget to post some pics when you get it finished.
You know, somebody actually complimented me on my driving today. They left a little note on the windscreen. It said, 'Parking Fine.'So that was nice.