A couple years ago, I bought a used Collings 290 wraptail from Willcutt Guitars and got a KILLER deal on it. Before I bought it, I asked the store manager (Eric, who is also a good pal of mine) what P-90s are in the guitar. He said that he thought they were Lollar P90s but wasn't exactly sure because it was a used guitar, but he said that what ever P90s are in it I won't want to change them because they sound incredible. The guitar was mint and it was such a good price that I didn't push the issue. I got it home and played it, and they did sound incredible! Well, I changed the stings and looked under the covers.... the guitar came with Throbak '52/'54 P90s!!! My killer deal got EVAN BETTER!!!
So yes, I have Throbaks in my Collings 290 wraptail.