If you want electronic ignition, the best bet is to use the General Motors HEI unit designed for the 250 and 292 inline sixes. Other than a little bit of machining on the housing to get the proper depth of engagement of the oil pump drive, it's a virtual drop-in fit. You will need a heavier gauge power wire from the ignition switch to the distributor due to the current draw of the HEI unit.
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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