If i remember correctly those stock 7-1/4 drums are quite small...if i was you id take the time to update to something larger like atleast 10" now that you are doing it
I have the 11" drums on my rear and the 11-3/4 front discs and to be honest, ive been in some situations where i wouldnt want to take the chance with stuff thats any smaller
thats just me though...either way, goodluck8)
