TR6 Ignition /coil

["Michael Greene" <m.e.greene@worldnet.att.net>]

I have decided to order Electronic Ignition for my 1974 TR6.
Moss list the unit as for about a $125.00 and Summit Racing list the unit for
about $90.00. Are these units the same?
Is the correct Crane part number CRN-700-0231 for my car? (regular street
driving)
I am also going to replace the coil, should I use a Crane coil #PS40 or a
Lucas Sport coil?
Has any one ordered from Summit Racing before?

PS
Thanks Terry Geiger and Don Malling for you email help on this subject.

Mike Greene