I found a place in Europe that sells pre-chambers.
The 1.6L TD (same as audi 2.0L TD and volvo 2.4L TD) chambers are about $90 for a set of four. I've worked a deal for 15% off if I buy four sets, bringing the price of four down to $77. Plus shipping, and duty/tax.
Shipping will add $15 per set of four.
I can't really predict what the importation duties will be.
If anyone is interested, let me know asap. I'm ordering at the end of next week.
It'll have to go down like this: Paypal me $82 for the chambers shipped to me, then when I find out what duties are, you can paypal me your share and I'll ship them to you... at your cost. hehe. Postal service from here to anywhere in North America would be under $20 for a set of four.
I'm ordering friday 23rd.