Want weld wheels, what sizes and need specs for 03 gt

I'm wanting to get some skinnies from weld racing. I want the pro stars but wished they made skinnies in the prostar xp series. There website says they don't have them. And the 15x10's

So for the 15 inch weld pro star's was size wheel 15x3.5 or 15x4, what size offset, and our bolt pattern is a 5x4.5 or 5x4.75. What size wheel spacer. What size for the 15x10's, and what offset and can i still use the factory wheel studs and factory lugnuts on the 15x10's

Thanks
Josh



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15 x 3.5 with a 7/16th wheels spacer and a 1.75 back spacing
15x8 with a 5.5 backspacing
15x10 with a 6.5 backspacing

Is this all correct. And can I run stock wheel studs and lugnuts on the front and back.

Josh