[V8] rim specifications for V8s with UFOs

[Gunter Lorberg]

Would anyone be able to give me some quick pointers on what I need to know about offset specifications and rim size when buying rims for my 1990 V8 with UFOs?
 
Which rims will bolt right on, and when will I need spacers?
 
I'm considering some new inexpensive 16" rims with the following specs:  16x7.5, 5-112, OFFSET +40mm      ...will these, for example, bolt right on?
 
Thanks,
 
Gunter
(2) 1990 Canadian V8s