I have used race parts solutions alum, steel and stainless. Never had issues with leaks. On drag week they came a part twice a day. Even caught one on the trailer and it bent up all kinds of stuff but the v band was fine.
Tim
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86 mustang
454 lsx FTI ls3 mast 4500 9.24 144 pump gas dragradials
79 z28 29k org miles. DSE suspension Bonspeed GTB
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