It has 454MAGs, with B&M blowers. Used to be setup with what look like CMI e-top headers that I am currently working on switching to Stainless Marine manifolds. I have one engine out so I couldn't measure from shaft to shaft. I measured from center of transom plate to center of transom plate and got 33 inches. Do you think I'm missing something?

Center is center !!! I think 33 is correct... Looks that some where built with a tighter center liner than others... When I ordered my steeering from Zieger marine , they had me measure several times and different locations... I'm still in storage , so cannot confirm the 34 , or 33 on mine , but will have it out short ly.