Michael,
I will try to remember to scan a few pictures of the engine and of the Drake DT160 in the Ligntning and send them to you.
Phil has the same lightning rod problem as Paul Sheldon & the F1 Register -- when you are about the first to really try to lay it all out, you work from what you have or what you can find and then everyone else comes along and tells you have you goofed up and got it wrong....using information you didn't have....
Generally, Printz and Harms were faced with a huge task when they began their separate excursions into the murky world of AAA and USAC records, especially in regards to chassis and even engine identities, particularly in the AAA eras.
As I have been fortunate enough to now have access to some of the records available that I didn't have before, they are still not at all what you would expect. You have to do considerable reading between the lines and head scratching to sort some of it out and relate this to that and...
Yep, there are errors and omissions in the Harms (and Printz) data, just like that of Sheldon and Crew -- but we have to balance that against the fact that Phil has made the data available and it is quite good to use as a baseline for these events.
As an aside, as time has gone on, I have found that I have begun to use a method to record my race information which works for me pretty much regardless of the series being recorded, although it originated with the AAA/USAC/CART series. Here is a random sample:
Round 01, 1 April 1984
Toyota Grand Prix of Long Beach
Long Beach
Long Beach, California
112 laps of 1.67-mile street circuit, 187.040 miles
Weather: Sunny, cool Attendance: 55,000
1st Mario Andretti
No. 3, Newman-Haas Racing, Budweiser Lola T800 – Cosworth DFX
112 laps, 2hr 15min 23.0sec, 82.989mph
Start: 1st, 1min 06.263sec, 90.729mph
2nd Geoff Brabham
No. 18, Kraco Racing, Electrolux/ Kraco Car Stereo March 84C – Cosworth DFX
112 laps, 2hr 16min 26.2sec
Start: 8th, 1min 07.729sec
3rd Tom Sneva
No. 4, Mayer Motor Racing, Texaco Star March 84C – Cosworth DFX
111 laps
Start: 15th, 1min 09.054sec
I like this format since it is very flexible and allows information to be tailored for a series. It is arranged how I generally "think" about the data, with places to insert chassis numbers or whatever else you want into the format.