[oldskool]

"...as far as I know, all 301 cranks are the same."

Have never seen a 301 crank. Just going by what I've read online.

Here's what I usually read about the 301T crank.

"...a rolled fillet crankshaft..."

Don't know what that means nor if the T crank is actually different from the non-T crank, or not.

Another article describes the turbo crank this way.

"...installed a sturdier crank with pressure-treated fillets..."