Will I regret change to 3.55s from 2.76s

Something which hasn’t been mentioned in this thread that does have an impact is the transmission. Is it an automatic or manual, if manual then 3 speed or 4? If it’s a 4 speed, is it a close ratio or wide ratio? The wide ratio transmission has a lower first gear and a bigger spread between the gears. The close ratio has a higher first gear and closer spacing on the gear ratios. Now it’s my understanding that most small block 4 speeds are close ratio and most big block units are wide ratio gearing, a big block will generally pull through a longer rpm range than a small block, which tends to make hp at higher rpm and through a smaller rpm range. All this needs to be factored in to understand what you can expect. No matter what it sound like your having fun!