No, they won't.
Your front guards are too small (for that amount of offset) and GA/B rear guards are the smallest of all the guards (All wagons have GA/B size rear guards as well, so that's all GA/B/C/D wagons).
Now this is a pic of my wagon with 16x8 +10's on it.
It's running GH front struts (which narrows the front geometry by 40mm in total).
My old GB sedan ran 13x6 +5 Hustlers (exact same rims as on my current GC wagon), they used to rub just befor efull lock on both front apron, and firewall (fitted with 205 60 13 tyres).
To even think about fitting 15x8's on a GA/B shell, you'll be wanting to convert to GJ onwards struts (which narrows the front geometry by much more the the GH struts). You still may need flares. On the rear, you will need to flare you guards for certain.
A112H wrote:I am pretty sure 77galantv6's sedan had the 15x8 +0 Rota's on it?
Yes it runs 15x8 zero offsets, but it is running GJ onwards front struts, and the rear diff housing is narrowed 30mm more then a standard Galant diff (and GC/D sedans have huge rear guards compared to GA/B's)
This pic says it all doesn't it?
Even with a 30mm narrower rear end, and 195 50 series tyres, It still needed the rear arches pumped out by 15mm
Note: I am not joking, 15x8 zero offsets rims will not fit a GA/B shell with out quite considerable modification.