Regarding the engine movement, this engine flexes. A LOT. So much, in fact, that member waldig made some tie-downs for his engine. So you'll need to make allowances for that. The other concern is water... you don't want to "funnel" rainwater directly into your charger. That would be a $7,000 "oops".

Gains with a needswings are huge. I'm not keen on exact numbers, but I do know that with JUST the Needswings, many members can run a 12.7-12.8 in the 1/4 mile with a good launch.

That's at least a .4 second improvement over stock... huge bang for the buck.

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