need help deciding wheel sizes for my 77 442

[ROCKET QUEEN ONE]

i am old school with 15 x 10s in the back and 14 x7s up front but recently have taken a likeness to the 17" size. any one out there got 17s on there cutlass, how about
16s? i was thinking about maybe 17s in the back and 16s up front but i have alot of trouble with wheel sizes and what they will look like and performance

[damaged442]

I thought I saw places like Wheel Vintiques or something (maybe it wasn't them) with the SSIII in larger sizes too. I 'd be curious to see how they look in 17".