I have stock jcw rims and I think the previous owner used to have spacers on this car before but did not change lug bolts to original. now my car doesn't have spacers but longer bolts like below. would it be okay or do I have to replace all bolts to stock?

 

As long as the bolts aren't too long and rub on the knuckle, you'll be fine with what you have.

 

Thanks for the reply. I believe you are mini expert. this is different topic.
I replaced valve cover yesterday because I found little residue on spark plugs on bottom part but once I removed the valve cover I noticed that there were no spark plug tubes and it seemed spark plug gasket were working fine as you can see the picture below. If I don't have spark plug tube, does it cause oil leak on spark plugs?

 

I don't think those tubes (or lack of those tubes) would cause oil on the spark plugs, I would assume only the round gasket at the cover interface would prevent oil from getting in there.

 

Thanks for the explanation. so I don't really need them?