The body is unrestored but very straight. The 1972 Pontiac GTO beige cordova top was replaced and is in really good shape.
The correct carburetor and unitized ignition are particularly rare. another important point is that the 7F6 heads have hardened seats so they can withstand today's gas.
As in 1964 and 1965 the 1972 GTO did not have its own model number, it was an option to the LeMans model, hence the 2D37 in the VIN. A lot of "Lemans Sports" were built with the endura bumper. A lot of GTO listings are "sports", not real GTOs. The 334 option in the PHS for this car is the GTO option. The X2P in the VIN (34X option) means that this is a real 455HO 4 speed, not a fake. The motor as is complete, correct 455HO. matched with this car, you do have one of the 310 455HO GTOs produced in 1972.
The Hagerty valuation guide does not cover 1972. It stops at 1971. According to http://www.nadaguides.com/Classic-Cars/1972/Pontiac/GTO/2-Door-Hardtop/Values, this car would retail for $35.2k on average, topping out at $53.6K. Hemmings only shows 6 listings for 1972 GTOs. The average ask is $60K, with a low of $20k. The low is not for a 455 HO. Someone actually is asking $125K for one. based upon this, with a new paint job and a few cosmetics, i'd guess this car might be worth at least $47.5K, probably up to $52.5K. That's a minimum $20K upside from my asking price.