Leaky rear main in a 351 can be fixed for about $300. Too bad you let her go...
Those old Broncs could take a beatin' & dish one out too. The 302 will practically last forever even if somewhat abused.
The engine/tranny in my '88 Merc was practically bomb proof. Had the tranny serviced once during its life in Smithville, Tn at 100,000 miles - the shop owner asked if it was a new one 'cause it looked so good. If that has the same tranny, just put an extra cooler on it & you'll never have a problem.
