Yeah, no 69 Camaro, but still a pretty cool first car I guess. I'm sitting here looking at both pics...and laughing at how I could never seem to find all the trim for that thing. I had it 10 years...
Interior was kinda cool too. Black low back buckets, console shift, factory tach, AM/FM radio with "reverb". It was a fancy car in it's day. Power everything too, including antenna. lol
Those old Buicks were dam good cars...
I loved the '66 Wildcat I had,even if it was a lowly 4 door!..it was about the same dark blue metallic color as yours was too,with a black vinyl roof..interior was mint,it had belonged to a middle aged housewife,she kept it nice.
It had the speaker grille in the middle of the rear seat with an optional reverb unit for the AM radio,it had a speaker up front in the dash too..."Dream On" By Areosmith sounded awesome in that car..
I admit to beating the snot out of both of the 401 Nailheads I had--the other was in a '66 Electra 225 ,2 door hardtop I had before the Wildcat..had them both for over a year ,it was nice having two big land barges that could blow the doors off many "muscle cars" yet still glide down the highway like floating on a cloud..
One of the 401's had a noisy tappet,an old gas station owner showed me what they used to do to silence them--had me remove the valve cover (2 bolts and 3 minutes !),and he pinpointed the noisy one by pressing down on each rocker with it idling--when the culprit was found,he took a nickel out of his pocket ,had me shut it off,and he forced the nickel between the valve stem and rocker arm tip,he said "start it up"--it was silent!..

I never had a lick of trouble with the engine or valves,in either car..
I took the valve cover off and looked at the nickel after I drove the car 2 years and it didn't even look like it had any wear--I had fears it would get eaten up and drop into the springs..
Those nailheads had serious low end torque,my Electra weighed over 3 tons,but it would squawk the tires going into second gear just under 60 mph..they could wind out too,for a big block..I bet the Buicks could have beat my GTO in a stoplight drag race..and that had a 400 with 4:10 gears..
The Electra used to smoke a bit,the Wildcat's engine was much "tighter" and was a bit more powerful..I think the Wildcat had slightly lower gears too,the Electra had 3:08's--both could burn off one rear tire in one burnout,I loved doing 300 foot long ones with both cars..night after night they withstood this type of abuse and it never seemed to phase them...I miss both of those cars a lot!..