Any steering issues with 454s?

[Matt300ZXT]

I'm gettin a 54 Chevy next Wed with the stock 235 in it. I'm looking at putting a v8 in it after a few weeks and eyeing a few 327s. I had a guy offer up a nice 454 with some goodies on it for $900 and noticed the crossmember style mount mentions it fits SBC/BBC/90deg V6 and was curious if anyone had run into any fitment issues going with a big block over a small block? Also concerned about the extra torque or weight, wondering if it puts any extra stress on the frame or old school leaf suspension.

Any input would be appreciated.