Need help....91 civic sedan dirt track

Well, i need some help with this one..i have worked on alot of hondas, mostly engine swaps for buddies, but suspension swaps never have been needed.

I am currently turning a 91 civic sedan into a dirt track racecar. It's getting completely stripped, pinned, caged, and a b18a1 thrown in it.

here is my question of the day....

Is there a direct or semi direct bolt on from another honda/acura that will allow me to run a 5 lug wheel? I am allowed up to a 14" wide tire...most of the guys that run the local track are backyard mechanics...that's why it's fun. I am rather automotively inclined, but the suspension has to remain mostly stock in order to comply with rules.--however, if it is swapped, then i could run a wider snow tire for better traction.

A second question....

Is there a way to modify the b18a1 tranny so that i can use limited slip/posi-track?? All of the "kids" that get their cavaliers and neons run in the smaller class just pull up in a stripped junkyard car...

You race it till it breaks, then buy another one for 150 bucks.

But i'd like mine to last at least the season. I hope to ready it for spring..and i really need ideas on this one, the skinny tires for honda aren't good enough, even with snow tires.

Thanks.