Hi Mitch,
Is your Stag an auto or manual? You will struggle to fit them under an auto rear end and they will hit the strut. My car is an auto with 18 x 9.5 +25's. With the 10" +38, you have 19mm less clearance on the inside of the rim. I have about 15mm clearance between rim and coilover body. I've also got camber arms to fix the excessive camber when you go too low, meaning I have more room that with factory arms on the inside of the rim.
Also, my rims are in line with the guard.