Current Projects chat and miscellany

Anyone got a clue on where I could find a 4 or preferably 5 bolt chainring, 1/8 with 37T or 38T? It gives me the gear inches I'm looking for and 15 skid patches but I'm struggling to find one big time. Its for an MTB fixed conversion but MTB specific 1/8 Chainrings are rare and generally range bewteen 32 and 36T, and track rings start at about 42T. I've found a 40T one but that only gives me 3 skid patches with my 15T rear sprocket.

I'm swapping out these big steel 2pc cranks and replacing them with either road or XC cranks to save on the weight

Not track specific, but sure it'll be alright:

http://www.jejamescycles.co.uk/stronglight-5-arm-item159574.html