probaby a 351. 331 strokers are supposed to be more reliable than 347 strokers, but i would have to assume a factory style 351 would be the longest lasting. but 302 strokers are just gaining more popularity now, so I guess theres not a lot out there with high mileage yet.
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2002 GT
1993 GT (SOLD)
'93 Mustang GT
RHC member #142
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