Frame or chassis options for A bodies

I'm not here to bash your conversion. Every conversion has its pros and cons, that is absolutely true. Even modifying the "stock" system with larger torsion bars has consequences that must be addressed. But it has been done and it's advantages and disadvantages have been demonstrated on the track. Same for the RMS, and I think the RMS system is more capable than the Hot Rod article suggests. But as far as it being better/faster, I still think that's a complete toss up. It's down to owner/driver preference.

What are the consequences that need to be addressed?

I only ask because I just wanted to make sure I knew what I was getting into. Thanks!