alright, i did a little searching but i didn't find an exact anwser..

i have a '73, it has cheapy wheels on it that.. can someone tell me what the bolt pattern, and what offset i need for it?

I'm pretty sure all the Elky models share the same bolt pattern as most GM cars and S10 trucks.
5 x 4 3/4"
5 bolts / 4 3/4" spread

Measure from the center of one bolt, skip the next bolt, to the outside edge of the third bolt.

Try this link:
Measuring Bolt Patterns (http://www.mrt-wheels.com/boltpattern.html)

Someone else will have to help with 3rd and 4th gen backspacing. My 5th gen couldn't have more than 3 3/4" - 4" before it gets too close to the frame.

the size and type of brakes you have also dictate what wheels you can put on. even wheels that fit one car with disk brakes may not fit another car with different size calipers or rotors. pretty much any modern style aftermarket wheel will fit just about any car that matches the bolt pattern, but there are plenty of people running "vintage" wheels [like me] who have to pay attention to compatibility issues. your 73 will have pretty big front disk calipers to fit the wheel over, so unless you are buying brand new wheels, make sure the ones you find will fit the front of your car.