I've been reading this thread with great interest for some months now with an eye to finding some solution for my TWM 'nostalgia' velocity stacks other than the soda-can style filters that Roush and others use. My concern regarding the tea strainer route has been over whether they will filter out sand, grit, and the like.
The car is a few weeks from being delivered, and since Olthoff Racing was displaying my car at Barrett-Jackson – about an hour from home – I decided to try the same fellow UK Tony mentioned (Bob of BBR Filters: (586) 883-0942;
eBay Store - bills-b-racing72:). He makes a nice product, custom fit to your stack, and uses a tea strainer-sized mesh that envelopes a micro-sized mesh that is supposed to filter out anything larger than two strands of human hair. Nice compromise.
Well, he delivered them in a couple of days (at $39 a pair + shipping). I drove up and installed them, and the consensus is that they look great and will probably breath better than the perorated disks with sponge-like filter material that came with the injection system. I'll follow-up after Dennis has dyno-tuned the engine. Anyway, take a look for yourselves – I've attached a photo I took earlier today of the engine bay.