Another BBC install!!!

[NF65Fleetside]

Sup fellas, so my lil small block is really tired and slang'n oil from only god knows where. Still running ok but I know its time to give it a rest. Ive got a lead on a stock complete 454 for a really really good price and thinking of picking it up.
My question is will it work with my 3 on the tree? Im thinking there will be interference with the linkage possibly. Also I believe I will have to upgrade to an 11" pressure plate and disc setup too yah? Now I know most will reply that the 454 will eat up the trans, I dont plan on abusing it BUT this install will be fairly temporary, so possibly the trans will stay ok with light driving and short marriage with the big block.
I plan on rebuilding the small block to mild performance status and throwing it back into the truck and then going nuts with the 454 for a future project. The 454 is basically a runner to keep me on the road while the small block is being built. Whats you guys take on this and also can the match of the 3spd and 454 be do able?