I have Langdons HEI dist in my 235 and love it. Tom Langdon was an engineer for Chevy for 37 years and worked mainly with the 6cyl engines. I have met the man and I am inpressed with his knowledge and willingness to help the average Joe on the street. I have purchased several items from him and have found his prices to be fair and of good quality. I would not hesitate to do business with the man at any time. Just my 2c
Tom
