What oil for black top (sorry new guy here)

[Purp240]

Hello,
Sorry Im new here couldnt find the search bar....
anyway my friend was in need of some cash so I bought his 96 240 from him...car is clean no rust..that purple color idk what its called (but someone said its a rare color...idk) im probably gonna use it for some road course events and such anyway car is an sr20det black top with 5 spd.. about 60k miles with stock bottom end with Jim Wolfe Cams and gt28
Just wondering if anyone could tell me the purolator pure one oil filter part number and what weight oil do you guys run.

also any info you wanna throw in for me would be good...im very new to the nissan game..I know a fair amount when it comes to cars and building etc etc but mainly toyotas (i own a MKIV supra too) but if anyone wants to tell me some tips or tricks or things i should watch out for when working on this car it would be great...

thanks in advance

Anthony