Look up Doug Herbert Get a free Catalog.. look for the 8 point roll cage for the Mavericks/ Comets. But you have to weld them, but you can leave out some of the bars to make it a 6 point if you still want rear passengers.. It keeps shipping costs down. http://www.dougherbert.com/8pointrollbars-p-15692.html?cPath=402_446
wheel and tires are a personal taste issue. if your looking for performance then you want to get the lightest combination of wheel and tire you can find. a taller tire will effectively numaricly lower the gear raito and a shorter tire will numaricly raise the gear ratio. i run weld draglites with 275 60 15s on a 15x8 rim in the rear and 165 15s on 15x 3.5 rims on the front. if i was to get something for cruiseing and street use, i would get a 17 inch rim in the front and a 18 in the rear. i do like american racings tourque thrust II wheels. there are endless options for wheels and tires and all that maters is what you like.
the big thing to look out for when ordeing a cage is that the shiping will be expensive. ask about shiping costs from where ever you order it. i recomend find a local chassi fabricator to build and install the cage.