I think the message being conveyed is at selling, a modified car will have less value than an original car. You do what you want, but if I personally came across a car that had a SBC and electric steering, I would walk away from it unless the car was unique and could be saved.
Or perform the modifications in such a way that it is easily reversible and have saved the take-off parts.
Not meant to wedge anyone's panties, just something to point out.