e air intakes, dog-tooth outboard leading-edge extensions, and short fences replacing leading-edge slots. Two-seaters also have curved strakes below the cockpit along the lower fuselage.
除了一个加长的机鼻外，气动布局的修改包括：在机鼻两则装上可以防止在高攻角下脱离偏航的“幼狮”式小边条，一对固定在进气道的三角鸭翼，锯齿型外翼前缘，和代替前缘翼槽的短翼刀。双座机型亦会在驾驶舱下两侧加上曲线型边条。
Structural modifications focus on increasing the minimum life of the wing main spar (originally set at 800 hours) have carried through several proposed progressive stages of modification with the intention of reducing fatigue problems and providing a life extension of up to 1,250 hours for a complete refurbishment with a newly manufactured main spar. About 50% of airframe has been renewed.
机体结构上的修改着重于延长主翼梁的最低寿命（800小时），以进行多次渐进式阶段的改造方法来达到减少疲劳和延长寿命至1250小时的目标。此外，大约五成的机身接受了更新。
With the exceptions of two-seaters and R2Zs that are powered by a SNECMA Atar 9K50 turbojet engine (with a manufacturing license), the fact that other conversions retain SNECMA Atar 9C/9D turbojets is suggested by the absence of the large dorsal airscoop and smaller overfuselage airscoops of the Kfir (which is powered by the heavier, more powerful GE J79). Prior to the installation of the 9K50 in the two-seaters, the inlets and fuselage frames have to be modified. The installation of an IFR probe permits take-off with a lower fuel load and a relatively higher war-load. The probe is fixed to starboard side of the cockpit. Additionally, a single-point pressure refueling system is fitted, enabling times to be reduced (a maximum of five minutes for a clean aircraft).
除了装有斯奈克玛公司的“阿塔”(SNECMA Atar)９Ｋ-５０型发动机（南非已得其生产权）的双座型和Ｒ２Ｚ侦察型外，其余改型沿用原来的“阿塔”９Ｃ或９Ｄ型发动机，这个事实能够从它们缺乏“幼狮”机脊上较大和机身上两个较小的辅助进气口（因配备更重、更大功率的通用电气ＧＥ Ｊ７９发动机之故）推测出来。为了在双座型上装上９Ｋ-５０，它们的近气道以及机身结构将会进行一定的修改。而固定在驾驶舱右则靠后的受油管，可以令飞机在燃料少、武载多的情况下如常起飞。另外，一套新设的单点压力加油系统将减少飞机受油时间（油尽后加油需时最长五分钟）。
Improvements in performance include reductions in specific fuel consumption (4%), take-off distance (10-20%), minimum speed (100 KIAS), time to climb and increase in specific excess power, sustained load factor and sustained turn rate (15%). The canards permit the maximum take-off weight to be increased by 700 kg for a penalty of fewer than 5% in level acceleration time and maximum level speed. The uprated engine also allows a possible incr
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