I ported the 441 that I usta own and it actually ran worse. Strato charge and x-tork engines dont respond well to muffler mods unless the rest of the cylinder and piston are heavily modded.
Yup, most say the 441 runs dam good as it is.
Wise shopper!
I'll top 2000ssm6's offer.
I'll braze an extra pipe in for ya and pay return shipping!
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