[equivalent]

i relize this has nothign to do with the bronco. but it is ford. im looking into buy a cougar with a 5.0 1991. has 170k miles. kinda alot. i can probably get it for $500. basically i want to know if i should go for it or wait for a better deal. btw im keeping the bronco lol. i just got my 35" procomp tires so i have to put the lift kit on. lmao. but i want the cougar for a dd and the bronco for weekends. i want to keep the milage on the bronco down im at 9k miles on it know. it is a automatic ive yet to see what tranny is in it.

any headaches i should know of?
round about idea of gas milage? ill assume upper teens lower 20's.