do have to pull the motor out???

[Chevysucks]

hi guys. A little bit ago I bought a 88gt with a 302 h.o. E303 cam stage one port and polished heads. bbk shorties, flowmaster two chambers. Two Days ago I went to check my oil and the dipstick read that there was none in it. so i went under the car and there is oil all over everything down there comming from the oil pan. so I checked it out and there is bolts missing every where and i guess the guy that i bought it off didnt put the right oil pan gasket on because its sticking out..My main question is do i have to pull my motor out to change the gasket?. If some one on the board could answer my question it would be a big help. thanks.
hey if anyone knows how to put a pic of your car on here tell me and ill post mine.