new rims :)

[1badlxconv]

i went to the tri state swap meet today and found 4 summit 5 star (look a like of weld rims) for $150 and i negotiated to $130. i bought them with no wheels on the rear rims and skinnies on the fronts. i mounted them up real quick, and they look soooo sick
ill put pics up later but these make the car look so bad ass
i just need tires for the rear,
what would fit a 8" rim, but still stuff up the rear end of a stock vert mustang?
i got front tires, theyre brand new (look like it) so i just want to do tires for the rears
should i do street ets? or dot racing tires?
what brand should i do?
i got a big time budget so i need a set that isnt costing me a leg and a arm
so what is there guys?