Hi Zooma
Welcome to the forum.
My mate is still building his Aerokits Swordsman(40 years or so), it is finally into paint.
Helped him out with a brushless motor setup which will give it about the same speed as the old MERCO 61, but, no starting problems.
My Swordsman has been lengthen(mainly to get the Lipo batteries in-between the frames ) and customized with a mix of Aerokits other designs.
Yes I have a PDF copy of the plans, so if you wish to build another you can have the file for FREE.
Can-on-a-bus