transmission bolts

[sycle]

Ok, i have a 1991 nissan 240sx coupe auto. I have all the parts that i need for the 5-speed swap, yet i have had a hard time getting parts. I was wondering if anyone knew the lenght and diameter of the transmission to engine, flywheel, and clutch to flywheel bolts so that i could go buy some new ones. I have only found one car around me with the bolts still with car(havent been stripped), but i have to get a hold of a farmer to try to go get them of the car. So any help will be greatly appreciatted. Thanks