[Tigers] throttle bracket plate update

[Ron Fraser]

    Mark Rense found a reference to a similar looking plate in some
Edelbrock literature so it appears to be an Edelbrock part.

See pg 3 in pdf  - 1490/ 1844 adaptor

http://www.edelbrock.com/automotive/misc/tech-center/install/7000/7521.pdf

I think this is an interesting part that will put the Tiger throttle bracket
in a better position.
The slot in this part is for universal fitment which can be eliminated if
desired and I think a stud should be threaded or welded to the plate.

Thanks to Gene for introducing this part and Mark for finding a reference
about this part.

Ron Fraser