Drag radials on stock 14 x 6 rims

But why do that when all I have is a small bolt pattern 7 1/4 that I'm going to end up blowing up and won't be able to reuse the rims or tires so would be point less to spend all that money on buying rims that are sbp and not being able to reuse them on a bigger rear end in the future

You just answered your own question. Don't bother. The way you say "all that money" when I talk about a $50 spot makes me wonder why your even trying to do anything at all, short of the tune up, oil change and tire pressure check. I'm all about the inexpensive build, but cheap, fast, good; pick two. Speed costs money, and your going on about $100, when you need cash to even bother racing, like, what if i need a tow because my cheap build broke down, and spewed oil all over the track. Or I blew an axle and look like that dude from the video every is laughing at when he got on it and the rear-end fell out of the back in front of McDonalds.