Other than service parts, we all know there was no HiPo 289 engine for 1968. But based on a fuel pump I stumbled on a few weeks ago, it appears to me Ford initially had some plans to produce it for the Mustang. Thought I'd share a few photos on some of the forums since it is so unique. This thread is also posted on the HiPo and SAAC Forums...
The pump is Ford part number C8ZZ-9350-A, Carter number 4543S. It has dual springs and appears to be exactly like the 66-67 HiPo C6ZZ-9350-A, Carter 4201S unit, with one exception...it has the larger 3/8" inlet. I could not find either the Ford or Carter numbers in any of my references. Fortunately, both Tim Lea and Bob Mannel have copies of the 1968 specific Ford MPC which so far is the only reference that lists the 4543S. Thank you to Tim and Bob for identifying this thing! Below is a copy of the listing from Tim's 68 MPC, as you can see it shows the application as "F Special (with 4/B carb.)...8...289", a car that was never built. The assumption is with the car on the drawing board Ford had to develop this pump to accommodate the larger 3/8" fuel line for 1968 since the 4201S had a smaller 5/16" inlet.
If anyone else has information on this pump or Ford's plans to build a HiPo 289 Mustang in 1968 please share them...
Thanks,
Dave