You have a sweet converter for that turbo. I run the same AC nonLU. 1.49-1.51 60' for me with MT drag radials.
(Edit, oh you friend needs more converter, didn't see that. You have a good one)
I ran a 11.1 with a little te61 on an untouched long block. Could have run more, but wanted to drive home. I limited launch to 9-10PSI. Never tried more. You should be able to rip out a low 11 with ease. I then tried a TE67, same times! That turbo did not like high boost. The 45 is about the same as a gt67 except the compressor wheel is old school, not the GT style. It (45) would be better at high boost. GT67 is better on the street, spools up quicker. I then stepped up to a t70, felt great on the street, never took it to the track, winter time...but my engine is no longer stock. GN1 race ported, comp roller, FAST, ported intake, etc.....
Get some good tires, and a $200 trans brake (Ihave 1) and high 10s should be no problem. Tell him to get ready for tranny work, axles, safty equipt, etc...Then go for the heads and cam.