Built Performance is actually the old location of Heavy Throttle. The crew was the old install crew for Heavy Throttle. The only reason for the split is Heavy Throttle is now retail only and Built is installation with some retail (through HT of course

). They are all super nice and I would recomend DIY and then take it to them for a Swap Check. They run about $300 and you can be sure not only that it runs, but that it runs RIGHT! Save money and run strong!
http://www.builtperformancestore.com/
Most shops can get an SR into a 240 but they run like crap. Either Take it to a specialist OR DIY and let a shop check it out. You never know what might be a little off and they can even tell you what to look out for so you prevent catastrauphic failure in the future.