I don't mind KA-T's, or RB20's, but unless you're gonna build a KA, it's not worth it. Yes you can get some easy torque, but it generally never lasts that long. Before too long you're replacing pistons. I liked my RB20 because it would hold the power better than the KA-T, but didn't have the torque that the ka-t did, but it had more reliablity at least to 308hp for over a year at 14psi. Now SR's, I hate to say it, but I've never had problems with them, swap them into a 240 and everyone beats on them and they last. I've known plenty of people running around with 400 hp SR's on stock internals for a long time. I can't argue with that. SR's are easy to swap, and work on compared to RB's, you can do one in your own garage at home in a day or two. I've done all of the swaps, and SR's are the most cost effective for everyone, and can make the power.

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