no they dont bolt up you can use the lower and get a bennet or cartech upper for it and it will outflow just about anything.
i have a veriety of them in the basement i cut the 302 upper to make a box intake for my 351 lowers which i have to port for days
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89 with 331 t3'/t4 hybrids. upr Suspention worked out finnaly . 9.89 144 mph .
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