That is very respectable for first time out. Hope you enjoyed. Many folks make the mistake of throwing money at their car or unnecessarily changing setup to gain a few tenths. Been their & learned.
My 65 cuda had a much stouter engine, better gears, etc. than your current setup.
First time out i ran a 10.56 @ 72 mph spinning all the way down track. Knewi had potential as mph was decent considering.
Before i toasted trans 2 yrs. later had got down to a best of 8.12 @ 86mph with no changes except
*good solid tune to include pertronix kit & FBO limiter plate in
distributor. SB’s love initial.
*learned to drive, walked car off line then punched.
*800 cfm eddy carb.(probably to big for you but mopar SB’s love
CFM’s contrary to what some folks say
*Ditched the factory kickdown linkage & accelerator cables with
Lokar. Factory stuff is sloppy on a good day.
*Dropped rear tire air pressure to 15 lbs for track
*Ran with 1/4 tank of fuel or less & dropped weight on cuda
as much as possible. ( removed spare tire, jack, any bs in
glovebox, used synthetic fluids)
Most of it was me getting better as driver but for under $600 gained
over 2 sec. & loved the challenge.
Good luck, enjoy & like others have posted we are here to help.