Hi Taily.
Thanks for the offer.
The holly TB systems are good . I ran a 2bbl avenger on my 253 for a couple of years.
Try and get a returnless system if they make one and find a way to use a late model efi disy so you can use the spark control .
And get the biggest 4bbl they make cause I found I was limited when I wanted to add power.
Cheers