I installed a SR20 GFB crank pully plus belts in 2003. Never any issues. But have revised that the drive belts are now overdue for replacement. That was 17 years ago!
Vaguely I remembered having to get a non-Nissan belt part for the power steering belt. Looked in my folders, and could not find the info.
So I rang GFB in Melbourne this morning and asked if I needed a different size belt. GFB no longer sell the SR20 pully, but you can get them on eBay.
https://www.ebay.com/itm/GFB-Underdr...A/152345710915
And yes, the belt is different.
Good, so I found the belt in the U.K.
https://www.ebay.com.au/itm/Contitec...72.m2749.l2649
Part No. 6PK1015
Other belt, stock NISSAN is Part No. 11720-J8001
Cheers . . .