what to do??

well i have an oil leak problem, i thnik it's the rear main seal, my dad is telling me to sell the car, and he said he'll helpme out with newer one, like 99-02, i mean i ithnk my oil problem can fixed and won't cost too much, i don't wanna go from have a 12 second car to a stock newer one and have to do it ll over again, but i will have a newer stang with not as many problems as an older one, and have the newer look, but i don't know what to do, help me deciede why i should keep my 5.0 over the new 4.6, so far i want to keep the 5.0 tho. thanks

it would be nice to have a new mustang but i really wanna keep my 94, it was hard enough for me to get rid of my first car (95 GT) a couple of weeks ago, being that i'm only 17, insurance would be really high on a newer stang, maybe after 2 years in college i'll get a daily driver stang like 99-02 and then supercharge my 94! thanks for the advice.