I used a Griffin radiator on my 32, just worked on a buddies that got his from Portell radiator in Desoto Mo near St Louis I believe, about as nice a radiator as I have seen and he makes custom shrouds also, plus his price beats a lot of others,
Heres something I found out lately, the 32 radiator mounts with springs on top the tabs so they are pushing down the tabs against the frame, I always wondered why this arrangement, Henry came up with this so when the frame twisted it didn't yank the tabs off the radiator or tear the radiator! Your frame won't have much twist but kinda neat why they where like that originally. lookling good so far, have fun!