Taking suggestions from  EthanBlack, I modified the two designs yet again.

UPDATE:  EthanBlack came up with stats for this craft:

Manufacturer
Koensayr Manufacturing


Model
BTA-G1 Y-Wing Gunboat (Mk1 and Mk2)

Class
Heavy Strike Craft

Cost
320,500 credits (new)
170,000 credits (used)

Technical specifications

Length
16 meters

Maximum acceleration
5,400 G

MGLT
50 MGLT

Maximum speed (atmosphere)
850 km/h (higher speeds possible with deflector shields on)

Engine unit(s)
Koensayr R200 ion jet engines (4) (rated 250 KTU)

Hyperdrive rating
Class 1.0

Hyperdrive system
Koensayr R300-H hyperdrive motivator

Power plant
Novaldex power generator; Thiodyne 03-R cryogenic power cells and ionization reactor.

Shielding
Boosted Chempat shields (82 SBD)

Hull
Titanium-reinforced Alusteel alloy (50 RU)[4]

Sensor systems
Fabritech ANs-5d full-spectrum transceiver with PA-9r long range phased tachyon detection array and PG-7u short range primary threat analysis grid.
Fabritech PV-2 Fire control co-ordinator for turret interlink and fire direction.

Targeting systems
Fabritech ANc 2.7 tracking computer with SI 5g7 "Quickscan" imaging system

Avionics
Subpro NH-7 flight control avionics package

Armament

MK1 -
Taim & Bak IX4 or KX5 laser cannons (2) [Nose Mount]
Three pairs of SFS L-s1 laser cannons mounted in three Q-7 droid turrets.
Arakyd Flex Tube proton torpedo launchers (3)
o 6 torpedoes each.

MK2 -
Dual Incom 'Tri-Cannons' (2) [Nose Mount]
Four pairs of SFS L-s1 laser cannons mounted in four Q-7 droid turrets.
Arakyd Flex Tube proton torpedo launchers (2)
o 6 torpedoes each.


Crew
Pilot, Co-Pilot/Fire Control Co-Ordinator, Astromech Droid.
3x Q-7 Droid Turrets (Mk1)
4x Q-7 Droid Turrets (Mk2)


Passengers
None

Cargo capacity
110 kilograms[3]

Consumables
1 week

Other systems
* Koensayr ballistic ejection seat
* Detachable cockpit