Here are some pictures and notes on the CAV DPA Injector pump to replace the Bosch VA style I will be adding some info later as time allows
This is a side view of the 4 cylinder pump, some of the differences are noted below,
1. The hose barb at the mount is the return, on the VA pump this position is your inlet,
2. This pump shows a "Banjo" type bolt at the rear of the pump, this is your inlet, the banjo bolt we have replaced with a hose barb also, makes for easier installation.
3. The throttle and shut off levers are on top, the VA they are on the side
We will add more pictures later and more info on installing

