350 V8 fitment in 49 C3100

[Mark3100]

I,m currentlu placing a 350 in a 49 C3100 and it appears that if I give enough room to clear the distributor (Pertronix HEI) the radiator will not fit. I would rather use the thermal clutch but will use electric if I must. I guess I could cut the large firewall recess and make it deeper. I have seen so many 350's in these trucks and just wanted to get some help before I start cutting. Just for reference, my harmonic balancer is just above the old front engine mount holes and I have a long water pump. Any pictures would really help!
Thanks!