I have a DIY'ish VPI Classic "2.7" TT. The plinth is the basic Classic 1/2 variant. However, I switched out the standard Classic tonearm and base for the Classic 3 (stainless steel) version. I had to drill out the top plate using a VPI supplied template and steel cutting drill bit.
I also switched out the standard Classic 600 rpm motor for the 300 rpm version used on the Classic 3. While fiddling with the motor I also replaced the stock cap. As a result, turn-on/off thump has ben eliminated.
So, I have a Classic "2.7" variant. Some VPI boosters have suggested that I switch out the stainless steel wand for the 3-D printed upgrade. It's on my bucket list of things I may want to do.