Hopefully this list will help your search. I didn't get a clip but Midwest Engine Sales had a great price and service for me.
Soshin Trade Corp (STC)
California * 1-800-635-1619 No Web Page
Redshift Racing Inc.
British Columbia (Canada)
Jason 604-574-5490 or
Wil 604-299-5283
http://www.redshift.ca
jdm@redshift.ca
Go Motors
1-888-4GO-MOTOR (888-446-6686)
http://www.japaneseusedengines.com
info@japaneseusedengines.com
Soko Engines
Midwest 1-800-338-7656
Westcoast 1-800-598-3535
http://www.soko.com
K Watanabe Engine Importers
California * 877-592-3644
http://www.kwcengine.com
Japan Direct
888-518-7341
http://www.usedengines.com
sales@usedengine.com
Rising Sun Engines
California * (Inside Calif) 888-660-4664 or 530-895-0300
http://www.risingsunengines.com
info@risingsunengines.com
The Place Racing
California * 626-966-4888
Some people have reported slow service from these folks.
http://www.placeracing.com/
info@placeracing.com
HASport Motorsports
Brian Gillespie or Joe
Arizona * 602-470-0065 or 602-470-0789
This *are* the B16 engine folks
http://www.hasport.com
In-Linepro
Virginia * 703-644-1788
http://in-linepro.com (bad link?)
Nippon Motors
California * 310-331-1588 or 800-416-3626
http://www.nippon-motors.com
Import Auto Salvage Larry
North Carolina * 800-962-8922 or 704-756-4002
http://www.importautosalvage.com/
info@importautosalvage.com
KMS - Kauffman Motor Sports
Georgia * 770-784-1801
JKKauffman@aol.com
Colorado Japanese Engine Exchange
Colorado * 800-699-9214 I've received word that they no longer deal nice with their customers and don't sell the ZC engine.
SohFast Auto Parts
Blaine, WA
(604) 837-8900
FAX (604) 594 -8940
www.sohfast.com
Midwest Engine Sales E.J.
800-234-1423
http://www.midwest-engine.com