increase its oil capacity as 3.5 litres is not enough for any turbo engine making 200 ish bhp
short of taking the engine apart and checking for wear and measuring with a micrometer,
the only way to 'hear' if the big ends are worn and close to knocking would be to leave it at least 24 hours and if the cold start works
(it cranks 2/3 times and fires up) get some one to start it from cold with you as close to the sump as poss and during the first few seconds of it running
you may hear a knock (2/3 seconds possibly) that goes away as the oil gets up to pressure and pumps through the bearings
my now dead CA did this 2/3 seconds of knock when I first got it 10 years ago, I managed to keep it alive at stage 2+ powers for 30k miles
by simply fitting a kill switch to the fuel pump and the coils and cranking it over from cold till the oil light went out,
then flick pump and coils on and start it,changed oil & filter every 2k max as well
new forged CA is getting every mod possible to make it reliable,as well as ACL race and ARP everything,
I'm doing cylinder head oil drain mod with AN12 braided lines to return excess oil build up in the rocker covers from high revs to the sump
also making a Greddy SR20 sump fit the CA sump as a bolt on removable thing that can be removed/cleaned every oil change if need be
,too much to detail here but can advise on more in depth mods to keep it alive longer