Miata Turbo Forum - Boost cars, acquire cats. - Want to buy a turbo Miata...need advise

Be on this forum looking at cars 4sale, reading posts about turbo'ed cars, and found a post that a moderator side, post the info and will advise...so, here is what i found.
A 1990, never see salted roads 74K miles
-garrett ball bearing gt2554r
-Briggs motorsport manifold and downpipe(2.5in)
-mishimoto intercooler
-cxracing aluminum radiator
-coolant reroute
-flyin miata upgraded clutch and 10lb aluminum flywheel
-walbro 190lph hp fuel pump
-deatschwerks 1000cc injectors
-awr polyurethane engine mounts(brand new)
- powertrix coilovers 16 way adjustable dampening 9k 7k spring rates
- 3.9 torsen swap with delrin diff bushings
-15x7 rota grid v with 205/50/15 Dunlop direzza dz102s
-hawk hp plus pads with centric rotors(also have a set of nb sport big brakes that would come with the car and I have brand new hawk hps pads for those)
-wilwood brake proportioning valve
-diypnp megasquirt ecu(fully tunable standalone ecu)
-launch control and no lift shift
-electronic boost control
-innovate mtxl wideband
-Depowered steering rack
-a/c has been removed
-220whp 2190lbs with a full tank of gas
Built about 5 years ago
So, what do ya think? questions to ask the seller?
looking for to your replies! thnks!