lt4 knock modulator???

where can i find a lt4 knock modulator for my lt1 i work at a auto parts store so i can cross parts easy but i havent found a part# form GM anybody got one or where did you guys get yours for your lt1???????

Yearone.com Is Were I Got Mine . It's About 50 Bucks.YEARONE PART#IS
01-BE-07-B-G. GM PART# IS 16214681.

Year One :( They are way to expensive! On everything. Use the part# and look around. GMPARTSDIRECT.

gmpartsdirect will rape you with shipping charges. Go to Shoebox's Tech Pages, and click on "Where to buy your GM parts"...... Jason Cromer or Dal Slabaugh will beat either of the above for shipped pricing.

http://shbox.com/1/4th_gen_tech1.html

thank you