I’ve used both Mega Arm’s chassis and KRG’s whiskey 3 gen 4 chassis and would highly recommend both. Since mega got bought by ZEV you can get great deals on there chassis right now, but also because of that I’d stick with the KRG going forward.
We have not used the Nuke chassis.
But, We just finished putting together a 375 Cheytac in the Cadex Dual Strike. The fit and finish is second to none. And the customer service is great!
We have also used MDT Chassis and would recommend them as well.
Just talked to a company rep. He said they only made eight of these before stopping production. So even though they are on their web site they dont sell them anymore.