Steve, from what I read there are a lot of T5's in MGBs. I was reading the instructions today on the 3.4L install of mine, there are very little mods for the tunnel necessary for the T5, just a bit of metal bashing to clear the top and the right hand 3 bolts on the bell housing. Not my style but certainly doable. Of course, those would have been unnecessary if the engine were moved 1/2 to 1" forward. There is some more bashing around the steering shaft cup on the firewall. That is to clear the exhaust header bolt. YMMV.
My extensive cutting was two fold beyond that necessary for the 4l60E trans. First was I wasn't happy with scraping paint while installing and removing the engine/trans. And two, I wanted some space for the air to escape. That was one of the heat-issues with the MGA. No air can cross the radiator unless there was space for it to exit. In addition, today I found that I could, if necessary, get a socket on the head bolts and remove the heads without having to full the entire engine trans. That alone makes all my sheetmetal work worthwhile IMO.
Your build is different with different goals, for sure but at least the T5 "should fit" without major tunnel rework
MV8, I can trim about 1/4 inch off the trans tab before I cut into the threaded hole that mounts the splash shield. I plan on doing that for just a bit more clearance. BTW, the shield for this engine/trans combo is cast aluminum! I don't have it yet. It is on the list. Today, the inner bolt hole for the gas pedal pivot was removed, eliminating the OEM use as intended. I will have to figure out a new pivot method. Stay tuned (in a few months) to see my solution.
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Chuck.
“Any suspension will work if you don’t let it.” - Colin Chapman
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