[gumby79]

CdA # Vs speed should be somewhat the same as spirit ?(not accounting for the variability of peek power's [150BHP] rpm/and or final drive raito matchingfor top speed) slower =higher CdA#, faster =lower CdA#. Nice way to express what kind of affect CdA has.
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Stock to stock comparison Im faster than the H1 @92.5(gps )@2500rpm 76^3mm fule per combustion event@ 160BHP. That is mostly a final gear raito Vs governor(rpm limit) cause /effect. 6.2L NA IDI has a higher rev limit (3500rpm @155hp),but lower gear(th400 Trans 1:1* Dif.2.73:1 *hub 1.92:1 =5.2416:1 final) *36" or 37" tire. compaired to my 5.9L TDI Cummins (518 trans .69:1 *diff3.55:1=2.4495 final and 160BHp @governed 2500rpm) *31.7" tire. Were you place the power has more effect than the volume.
The 2nd generation H1 ('94 newer) tops @85 ,95mph NA , turbo respectively. Gen1Vs gen2 6.5 L Diesel 170 hp @ 3400 RPM ('97) .75 OD (4L80) *2.56 diff*1.92hub=3.68 final. (Taller diff +OD) notice more top speed on gen2 . Gen2 hit the HP wall/ speed limit. Gen1 hit the governor speed limit(yes the governor from personal experience). Notice a difference on gen2 NA Vs turbo. This is an example of the importance of were you place the power Vs how much. With a 3500 governor3.68 final =169mph minus CdA and HP lacking/miss-placed penalties =85 or 95
I dont remember did you regear spirit for the missed 126mph mark.