Choking down a high pressure electric pump seems to be done a lot, but I've also warrantied a few in just months. After the third one expect an auto parts house to refund your money. No more pumps.
While some say it's ok,they don't give you a new pump or free installation, either. It's not the right part engineered to do the job. Installing a low pressure pump outside the tank works fine, too, and it will siphon fuel thru a standard sock and gauge sender. Then you don't need to choke down 35 pounds of pressure, and it all works with the carb. There are plenty of different rotary or pulse low pressure pumps that do the job correctly.
The inline pumps for frame rail mount run $85-125 at the most, the intank units up to $250 depending on what donor. Replacing the in tank is a hassle, especially since they don't seem to last much over 6-9 months choked down. Read the fine print on the warranty carefully - "off script" parts assembled for alternative uses are no longer covered by my company. Run the car one time competitively, no warranty.
If some one speaks up and says, "Sure, it works, and I'll give you free pumps forever," jump on that horse and ride it like you stole it.